A system for transmitting instructions from a master control facility (50) to a number of remotely located player units (11-14). The remotely located player units communicate through a mobile cell site (10). Cellular communication links (16) are provided to link the remote units (11-14) to cell site...http://www.google.ca/patents/US6148196?utm_source=gb-gplus-sharePatent US6148196 - Remote control and location system
